<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport"
    content="width=device-width, initial-scale=1, maximum-scale=1,minimum-scale=1, user-scalable=no" />
  <title>$.ajax()</title>
  <link rel="shortcut icon" href="../favicon.ico" type="image/x-icon" />
  <script src="./js/jquery-3.6.1.min.js"></script>
  <script src="./js/demo1.js"></script>
</head>

<body>
  <div class="box">
    <div class="form-item">
      <input type="text" class="username" placeholder="输入用户名" />
      <input type="password" class="password" placeholder="输入密码" />
      <input type="button" value="登录" class="submit" />
    </div>
  </div>
</body>

</html>